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EDWARD B. JUeKET, or ROXBURY, MASSACHUSETTS.

- Leners Paten: No. 61,542, dated January 29, 1867.

IMPROVBMENT'IN STEAM GENERATOR.

TO ALL PERSONS TO WHOM THESE PRESENTS SHALL COME:.

Be it ke own that I, EDWARD B. JUCKET, of Roxbury, in the county of Norfolk, and State of Massachusetts, have invented a new and useful or Improved SteanaBoiler; and do hereby declare the same to be fully described in the following specification, and represented in-the accompanying drawings, of which- Figures 1 and f2 are vertical sectibns ot' it, they being taken in planes at right angles to each other.

In the said drawings, A-dcnotes the {ire-placel or fuel-chamber, which is n. cylindrical drum'arranged concentrically within -a water-tight drum or casing, F, which extends above the said fire-place and opens into an annular vessel or chamber,G, arranged below the fire-place as represented. The furnace-grate may be placedV within the cylindrical space I-I, enclosed by the annular vessel G, and leading ont of the fire-place. Apeeries of pipes, E E, goes vertically through the fire-place A, and is arranged in n circle near and concentric with the periphery of the fire-place. At their lower ends the said pipes open into the annular chamber G, and :1t their upper ends they open into the water vessel F. Another series, D D D, ofpipes leads vertically out of the refplaee A into a hollow drum, B, arranged within and concentric with the vessel F, there being an annular space, a,between the two. A smoke-discharge pipe, C, leads out of the top of the drum B and through and above the top 6 of the vessel F. Whenthe said vessel F`is charged with water up to and above the level of the top of the smoke drum B, and a reV is made within the {ire-place A, the v'smoke and .volatile prod-nets of combustion which Imay arise from the fuel will pass from the fire-place into and through the stack of-pipes D D and into the smoke-box B, from which they will escape by the pipe C. The heat of the fuel and smoke will also be directed against the pipes E E, which will also serve to protect the inner curved 'surface of the tire-place froln contact with the larger blocks or masses of fuel. The heat imparted to the Waterin the Avessel F will induce such Water to flow down into the vessel G; thence up'through the pipes EE; thence uptoward the centre of the bottom of the drum B; thence along underneath and in contact with such drum; thence down through the space c, which isbetween the fire-place A and the vessel F. Thus there will-be caused in the boiler a circulation of the water which will be very favorable to the heating ofsuch water and its conversion into steam.

I do not claim a boiler provided with a fire-place, a smoke-box, an escape ue, and a stack of tubes to run from the fire-place to the smoke-box, and open communication between the two. What I claim, is Y The combination and arrangement of the series of tubes E,A the {ire-place A, the annular chamber-Gc, thewater vessel or drum F, the pipes D, the drum B, and the discharge pipe C, the whole being. applied together,

substantially in manner and so as to operate as hereinbefore set forth.y

E. B. JUGKET.

Witnesses:

R. H. EDDY, F. P. HALE, Jr. 

